Chronic diffuse streptodermia is a recurrent diffuse inflammation of the skin of coccoid etiology. The primary elements are flat bulls that appear against the background of edematous erythema, merging, forming large foci with uneven edges. Serous-purulent blisters are eroded, covered with crusts, new ones appear nearby. The skin is diffusely infiltrated. The disease is diagnosed…
Chromhidrosis is the staining of sweat gland secretions in red, yellow, blue, green and other colors. Disease can be caused by the synthesis of a specific pigment in the apocrine glands, the release of chemicals that have entered the body with sweat, or the formation of coloring substances as a result of the vital activity…
Chondroid syringoma (mucinous hydradenoma) is a solitary chondroid-epithelial tumor of the skin of a benign nature. The primary elements are small nodules of dense elastic consistency that appear spontaneously on the previously unchanged skin of the trunk. They rise above the level of the dermis, have a smooth surface, have slow peripheral growth, sometimes ulcerate.…
Cold urticaria is an inflammatory skin change that develops as a response to its cooling. It manifests itself in the form of red itchy spots, the surface of which is prone to peeling and cracking. Cold urticaria is localized on the face, ears, neck, hands, knees or thighs. It may be accompanied by a runny nose and…
Cholinergic urticaria is a rare autoimmune type of allergic urticaria. Clinically characterized by acute (within an hour) rash of small itchy bubbles with serous contents in open areas of the skin. The rash tends to spread, accompanied by a prodroma. It is diagnosed on the basis of anamnesis, clinical manifestations, provocative tests for acetylcholine, artificial…
Chloasma is a focal hyperpigmentation of the skin of various sizes, located most often on the face and having clear boundaries. Chloasma has the appearance of a spot of light brown, brown or brownish color. It can be multiple in nature. The diagnosis is established according to the typical clinical picture and localization of pigmentation,…
Furunculosis is a purulent–necrotic disease of the hair follicle and near-follicular connective tissue. The primary inflammatory element is the inflammatory node that forms around the hair follicle. The main cause is staphylococcal infections. A typical dermatological picture, signs of inflammation in a clinical blood test and the results of bacteriological seeding of the separated skin…
Boil (furuncle) is an acute purulent inflammation of the hair follicle that engulfs the surrounding soft tissues and the adjacent sebaceous gland. The boil begins with the formation of a dense infiltrate, in the center of which a necrotic rod is formed, ending in a pustule. Then there is an opening of the pustule, the…
Phrynoderma is a rare skin pathology associated with a lack of retinol in the body against the background of violations of its consumption or absorption in the intestine. It is clinically manifested by the process of keratinization in the area of hair follicles, resembling the hyperkeratotic “grater phenomenon”, which eventually turns the patient’s skin into…
Follicular mucinosis is a dermatosis based on degenerative changes in the pilosebaceal apparatus due to the deposition of mucin in it with the development of scar and non–scar type alopecia. Mucinous alopecia is characterized by itching of the skin, the appearance of small papules on the head and trunk, hyperkeratotic plaques, the formation of areas…